Silverlight, wcfRIA, how to trap completion of an [Invoke] method in DomainService1.cs

Question

this piece of code:
protected void recalculateMetrics(object sender, RoutedEventArgs e)
int daysToAverageOver = 20; // for a 20 day moving average
context.recalculateMetrics(daysToAverageOver, invokeOperation_ExitHandler, null);
context.deleteOldClosingPrices(invokeOperation_ExitHandler, null);
context.deleteAnyOldStockNames(invokeOperation_ExitHandler, null);
context.updateAllPortfolios(invokeOperation_ExitHandler, null);
context.updateTheCountersInAllPortfolios(nowRefreshScreen_ExitHandler, null);
context.zeroOutAnyUnaverageableStocks(daysToAverageOver, invokeOperation_ExitHandler, null);
context.SubmitChanges();
context.SendEmails();
context.Load<stk_StockNames>(context.getMissingStockNamesQuery(), LoadBehavior.RefreshCurrent, returnSet =>
fires off a whole bunch of [Invoke] methods in DomainService1.cs, which all execute asynchronously.
Once updateAllPorfolios() and updateThe CountersInAllPortfolios () are completed, then the client screen should refresh with the new numbers.  You can see me trapping the completion event of the Invoke operation.  But how do I trap the completion
of the actual async method?  I figure that IAsyncResult is involved.  I have googled around all the forums without being able to see how to do it in this particular case.
Any help appreciated.

Answer 1

I don't really follow your question.
You appear to be supplying callbacks there.
They fire when the process is complete and you get a result back from the server.
If I illustrate this with a piece of my code thus:
private void LoadSites()
siteService.LoadSiteList(LoadSiteListCallback, null);
private void LoadSiteListCallback(ServiceLoadResult<Site> result)
IEnumerable<Site> _sites = result.Entities.OrderBy(x => x.Description);
ObservableCollection<Site> sts = new ObservableCollection<Site>();
foreach (var item in _sites)
sts.Add(item);
Sites = sts;
ADGroupSites = new ObservableCollection<AdminADGroupSiteVM>();
RaisePropertyChanged("Sites");
RaisePropertyChanged("ADGroupSites");
LoadSiteList is called asynchronously.
Processing returns from LoadSites.
When the server returns the data LoadSiteListCallback is invoked and it does stuff with the data.
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